Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of hydrogenation is as below...

Dehydrogenation :: Dehydrogenation (n.) The act or process of freeing from hydrogen; also, the condition resulting from the removal of hydrogen..

Hydrogenation :: Hydrogenation (n.) The act of combining with hydrogen, or the state of being so combined..

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